Ichirin Wellness Onsen at Sukhumvit 24 in Bangkok

Bangkok’s heat and traffic make a long soak sound especially good. At Ichirin Wellness Onsen, you can move through Japanese-style baths, a Loyly Aufguss sauna and a hot stone wellness area, then cool down in the plunge pool. It is a city break built around rest, not sightseeing.

I like two things in particular: the range of ways to unwind, from the silk and herbal baths to the signature heat-wave sauna, and the option to add Yomogi herbal steam or a massage. Staff are described as welcoming and attentive, which matters when you are new to onsen routines.

One consideration: this is a booked appointment, not a drop-in stop. Plan ahead, and know that the basic pass includes one set of indoor loungewear, so you may want to bring clothes you are happy to put back on after your treatments.

• Several baths, one visit: Try the authentic Japanese onsen, silk bath, herbal bath, jet bath and cold plunge.
• A distinctive sauna ritual: The signature Loyly Aufguss uses heat waves, alongside a dry sauna and steam room.
• Hot stone time is included: The day pass covers access to a premium hot stone wellness area with mineral-rich therapy rooms.
• Yomogi is an upgrade: Choose the herbal steam package if you want to add this Japanese herbal treatment.
• Allow a few hours: A three-hour visit allows time for hot stone sessions, sauna, baths and breaks without rushing.
• Book and travel with a little planning: The venue is about 800 metres from BTS Phrom Phong Exit 2, with a shuttle car every 30 minutes.

A Japanese-style pause on Sukhumvit 24

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Ichirin Wellness is a practical way to set aside a few hours for recovery while staying in Bangkok. Instead of moving from one attraction to the next, you spend your time alternating heat, water and rest. That rhythm is part of the appeal: you can take things slowly and choose how much of the visit is spent in the baths, sauna or hot stone rooms.

The setting is on the fifth floor of Neighbor at 89/8, Soi Sukhumvit 24, in Khlong Tan, Khlong Toei. The address is central enough to pair with a day around Sukhumvit, but it is still worth checking your route before you set out. From BTS Phrom Phong Exit 2, the venue is about 800 metres away. A shuttle car runs every 30 minutes, so factor in its timing rather than assuming it will be waiting when you arrive.

The venue’s daily opening hours are 10 a.m. to 10 p.m. Appointments are available from noon on weekdays and from 10 a.m. on Saturdays and Sundays. The difference matters if you are hoping to fit in an early weekday visit: the doors may be open, but the listed appointment window starts later.

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Start with baths, then adjust the heat

There is no fixed sequence stated for the facilities, so you can shape the visit around your own comfort. A sensible approach is to begin with a warm soak, take a break, then try a sauna or hot stone room before returning to the baths. Keep the pace gentle, especially if heat is new to you.

The authentic Japanese onsen is the anchor of the visit. You also have a silk bath and herbal bath, each offering a change from a standard soak, plus a jet bath for a more active water experience. The cold plunge gives you a sharper contrast after the heat. Use it if it suits you, but there is no need to treat every facility as a checklist.

The mix is useful because it lets you alternate rather than stay in one temperature for too long. Take breaks between sessions, drink tea and pay attention to how you feel. The visit is meant to be restorative, not a test of endurance.

Loyly, dry sauna and herbal steam

Ichirin’s signature Loyly Aufguss is a Japanese heat-wave sauna experience. It gives the sauna portion of the visit a distinct focus, beyond simply sitting in a hot room. A dry sauna and steam room offer two other ways to warm up, so you can choose the setting that feels right rather than sticking with a single kind of heat.

The Onsen Day Pass includes the signature Aufguss, dry sauna and steam room. If herbal steam is a priority, compare the pass with the Onsen & Yomogi Herbal Steam package. Yomogi is described as a Japanese herbal treatment associated with circulation and relief from fatigue. The add-on costs more than the basic pass, but it is the clearest choice if you specifically want that treatment rather than just access to the general steam room.

A useful plan is to space the hot sessions out with a soak or rest. The aim is to leave feeling refreshed, not overheated. If you have a health condition, tell the operator before treatment; the venue places responsibility on you to disclose relevant conditions and does not accept responsibility for adverse effects that may arise from treatment.

Hot stone therapy calls for time, not haste

The premium hot stone wellness area is included with the day pass and has mineral-rich therapy rooms. A visit can include several rounds of hot stone bathing, followed by the sauna and baths. One practical example used three rounds of bedrock baths, a Loyly sauna and hot springs, with rest breaks, and took about three hours in total.

That is a helpful guide if you are deciding how much time to set aside. You can certainly make a shorter visit, but rushing between the rooms would miss the point. Leave enough space to pause, cool down and drink tea. The day pass includes a towel, locker, bath amenities and tea, which means you do not need to assemble a full spa kit before you arrive.

There is one small comfort detail to plan for. The pass provides one set of indoor loungewear. After hot stone and sauna sessions, that outfit may feel sweaty if you want to relax in the lounge before leaving. Bring a change of clothes if you want to finish in something fresh.

Choose a package that fits your day

The Onsen Day Pass starts at US$22.25. For access to several kinds of baths, saunas, the cold plunge and hot stone area, that is a reasonable price if you expect to spend a few hours there. It offers more than a quick soak, though the value depends on whether you will use the range of facilities.

The Onsen & Yomogi Herbal Steam option starts at US$29.65. It is a modest step up from the day pass if herbal steam is one of your main reasons for booking. The massage packages cost more, but include the onsen as well: Thai massage for 60 or 90 minutes starts at US$56.29, while aromatherapy massage for the same durations starts at US$63.69.

These prices are starting rates, so check the available package and appointment details when booking. If your aim is simply to rest and explore the baths, the day pass is the most economical choice. If you already know you want a massage or Yomogi steam, buying the combined package may make more sense than paying for treatments separately.

Staff and atmosphere are part of the treatment

A wellness visit depends on more than the equipment. A warm welcome and attentive help can make it easier to understand the space and settle into the routine, particularly if you have not used an onsen before. Staff are described as kind and welcoming, and the facilities as thoughtfully designed. That personal touch is a welcome part of a visit built around slowing down.

Weekday afternoons may offer a quieter setting, although crowd levels can vary. If you prefer a calm visit, request a weekday appointment when possible and ask the operator to confirm the time. Even with a quiet room, allow yourself proper breaks. A three-hour visit is a useful benchmark for trying several treatments without turning relaxation into a race.

Book ahead and keep the voucher details handy

You need to reserve a date and time in advance. After your booking is confirmed, send a reservation request through the Bookings page in the Klook app. The venue asks you to reserve at least one hour ahead, but earlier requests have a better chance of being confirmed for your preferred time. The appointment is reconfirmed by the operator, so do not treat the time you request as final until you receive that confirmation.

The mobile voucher is valid for 60 days from booking confirmation, expiring at midnight on its final day. Show it on your phone when you arrive. If you cancel at least 24 hours before the activity date, you can receive a full refund; redeemed or expired vouchers are not refundable. A no-show at the confirmed appointment time is not refunded.

Is Ichirin Wellness Onsen worth booking?

Book Ichirin if you want a few restorative hours in Bangkok and will make use of more than one facility. The mix of baths, cold plunge, Loyly sauna, steam room and hot stone area gives the day pass useful range, while the Yomogi and massage options let you tailor the visit. At US$22.25 to start, the basic pass is appealing if you plan to stay long enough to enjoy it.

Think twice if you only have a narrow window, dislike heat or expect a drop-in experience. Reserve ahead, allow time for the BTS-to-venue trip and bring a fresh change of clothes if you want to lounge after your treatments. For a slower day between Bangkok outings, Ichirin is a sensible choice.

FAQ

Where is Ichirin Wellness Onsen?

It is at Neighbor 89/8, unit 501, fifth floor, Soi Sukhumvit 24, Khlong Tan, Khlong Toei, Bangkok 10110.

How do I get there by BTS?

Take the BTS to Phrom Phong and use Exit 2. The venue is about 800 metres away, and a shuttle car runs every 30 minutes.

What are the opening hours?

The venue is open daily from 10 a.m. to 10 p.m. Appointment availability starts at noon Monday to Friday and 10 a.m. on Saturday and Sunday.

What does the Onsen Day Pass include?

It includes the Japanese onsen, silk and herbal baths, cold plunge, jet bath, signature Aufguss, dry sauna, steam room and premium hot stone wellness area. A towel, locker, bath amenities and tea are also included.

Does the day pass include Yomogi herbal steam?

No. Yomogi herbal steam is included in the separate Onsen & Yomogi Herbal Steam package.

How much time should I allow?

A visit of about three hours allows time for several hot stone rounds, a sauna, baths and rest breaks. Your actual visit can be shorter or longer.

Do I need to reserve in advance?

Yes. Request an appointment through the Bookings page in the Klook app after your booking is confirmed. Reserve at least one hour ahead, and wait for the operator to reconfirm your appointment time.

How long is the voucher valid?

The voucher is valid for 60 days from the booking confirmation date and expires at midnight on the final day.